Got that bass ackwards. Edward George Parry was a barrel brazier at Ithaca and left to build a gun of his own design as the Parry Arms Co. of Ithaca, NY.
Wilkes-Barre -- They were only in business for a short period of time in the early 1890's. When the Parry Fire Arms Company failed in Ithaca, NY, in 1891, the machinery, patents and parts went to Wilkes-Barre. Wilkes-Barre assembled quite a few Parry hammer doubles and put their name on them, and also made a hammerless double using Joseph Tonks patents #333,795 granted Jan. 5, 1886 and #514,574 granted Feb. 13, 1894. The hammerless guns were made in four catalogued grades -- Grade A, $60 list, with twist barrels, 10- and 12-gauge -- Grade B, $80 list, with fine Damascus barrels, 10-, 12- and 16-gauge -- Grade C, $100 list; with very fine Damascus barrels; choice of full or half-pistol grip; 10-, 12- and 16-gauge -- Grade D; $125 list; with extra fine Damascus barrels; 10-, 12- and 16-gauge. The assets of the company were sold at auction in October 1895. There is about a page on Wilkes-Barre in a McIntosh article in Volume Two, Issue 1, of The Double Gun Journal.
I am not very familiar with them. I am told they are grade marked in the wood on the inside of the forearm, just ahead of the metal. The photocopy of a catalogue I have shows a very fancy hammerless on the cover but only shows a cutaway of the action inside. They are seen so seldom, it is impossible to say what the price should be. Whatever someone is willing to pay.